This PR is mainly do three things: 1. Fix fe meta version bug introduced by #4029 , when fix conflict with #4086 2. Make drop check code easy to read 3. Add doc content for drop meta check
This PR is mainly do three things: 1. Fix fe meta version bug introduced by #4029 , when fix conflict with #4086 2. Make drop check code easy to read 3. Add doc content for drop meta check